I'm looking to wire up my towbar to my 2002 C3 the guy I bought the towbar of gave me a hand written wireing diagram and said it's very easy
Heres the instructions
Relay Yellow and Green to yellow and green on the cable from the socket )
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White & Yellow from socket to Green wire on loom.
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Red from socket to Red on Loom
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Orange from the socket to "small" white on the loom
-----------------------------------------Grey from the Relay to single wire black? on the loom
Brown and Black from socket to Yellow on the loom
Blue from socket to Blue on the loom.
Heres a picture of the cables

do the instructions seem correct?
cheers